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3 years ago

How many trophic levels do most food webs have? Why? Relate your answer to the appropriate law of thermodynamics

Biology

1 answer:

Anton [14]3 years ago

7 0

Answer:

Most food webs have between 4 and 5 trophic levels

Explanation:

Energy flow: From the whole quantity of energy that reaches the earth's surface, autotroph organisms or producers only absorb 0.1 or 1%.

From the input of solar energy begins a unidirectional energy flow. It passes through all the organisms in the ecosystem, from autotrophs to heterotrophs, until it is eventually dissipated in the environment.

There is an energy transfer from each trophic level to the next, and each level only uses 10% of this energy. This assessment is called "The 10% rule". As a general rule, only about 10% of the energy stored as biomass at one trophic level, per unit time, ends up as biomass at the next trophic level, in the same unit of time. The rest of the energy is used by the organisms in their own metabolism or dissipated as heat to the environment.

The progressive reduction of energy determines the number of trophic levels, which, in general, turns to be between 4 and 5.

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Saco membranoso lleno de fluido

BartSMP [9]

Answer:

La vacuola es el término correcto

(The vacuole is the correct term)

Explanation:

Las vacuolas son burbujas de almacenamiento que se encuentran en las células. Se encuentran tanto en células animales como vegetales, pero son mucho más grandes en células vegetales. Las vacuolas pueden almacenar alimentos o cualquier variedad de nutrientes que una célula pueda necesitar para sobrevivir. Incluso pueden almacenar productos de desecho para proteger el resto de la celda de la contaminación.

(Vacuoles are storage bubbles found in cells. They are found in both animal and plant cells but are much larger in plant cells. Vacuoles might store food or any variety of nutrients a cell might need to survive. They can even store waste products so the rest of the cell is protected from contamination.)

por favor ofrece una brainliest

(please offer a brainliest!)

7 0

3 years ago

In the rock cycle, sediment is stripped away and transported by the process of _____ after the process of _______ has taken plac

Nana76 [90]

ʜᴇʟʟᴏ ᴛʜᴇʀᴇ!
_____________________________________________________________

In the rock cycle, sediment is stripped away and transported by the process of erosion after the process of weathering has taken place.
_____________________________________________________________

нσρє тнιѕ нєℓρѕ уσυ!.
gσσ∂ ℓυ¢к :).
нανє α gяєαт ∂αу.

- нαηηαн ❤.

7 0

3 years ago

Meselson and Stahl used density labeling of DNA to show that DNA replication occurs via a semiconservative mechanism. In their e

cricket20 [7]

Answer:

The organism previously used 15N for replication so all the DNA molecules were of 15N15N type. Then the organism is shifted to a medium where only 14N is available for replication.
According to semi conservative mode of replication, a newly synthesised DNA molecule consists of one new strand and one parental strand. So after the first round of replication, All the 15N strands will synthesise new DNA strands using 14N resulting into intermediate 15N14N DNA molecules. Hence, only one band would be observed (15N14N) above the original 15N15N band since 15N14N has lighter isotope too so it will be lighter than 15N15N molecules and will lie above it.
After second round of replication, 15N strand from 15N14N would synthesise another 14N strand. 14N strand from 15N14N molecules will also synthesise another 14N strand. So now, 50% of the DNA molecules will be of 15N14N intermediate type and 50% of them will be of 14N14N type.Two bands will be observed above the original 15N15N band. One band of 15N14N molecules will be right above it and other band of 14N14N molecules will be even higher because it is the lightest band since it has only the lighter isotope of nitrogen.

8 0

3 years ago

Which statement explains how convection currents affect the movement of plates? Gravity pulls one edge of a plate down into the

ArbitrLikvidat [17]

Convection currents direct the movement of Earth's rigid tectonic plates in the planet's fluid molten mantle.

In places where convection currents rise up towards the crust's surface, tectonic plates move away from each other in a process known as seafloor spreading.

So, I would say the answer is:

As convection currents drift across the oceans,

they bring the pieces of Earth's crust with them as the supercontinent breaks apart.

Glad I could help, hv a good day :)

7 0

3 years ago

Read 2 more answers

Which of the following biomolecules tipically contains both nitrogen and phosphate

prisoha [69]

Which of the following bio molecules typically contains both nitrogen and phosphate?
The answer to this question would be nucleic acids. That is because they contain a phosphate base and a nitrogen group.

8 0

3 years ago